Orthoc. 



546 



1867, Niagara,— ^2i\. Ohio, Vol. 2, 1875, p. 148, pi. 9, fig. 2, 

 a cast of the interior, like all other specimens obtained from 

 the Niagara limestone strata at Oedarville, O., and also from 

 more western localities, where the species was first described. 

 All are more or less pressed into oval cylinders. — V h, 



Orthoceras crebriseptum. Hall, Geology of Canada, 



fig. 22S,— Hud- 

 ^^vl ^^^ river {Zo- 



'§}^^\\ raine shale) for- 

 mation^ III h. 



GeoL CciWctdcL , 



Orthoceras cribrosum, Geinitz. Fal. of E. Nebraska, by 



..'s^. Meek, 1866, page 

 ^^MM plate 11, fig. 18 «, 



xni. 



/^-^ 



enlarged figure; 5, enlarged pitted surface. Coal measures 

 and Permian, — Reported by I. C. White from Pine creek lime- 

 stone at Smith's Ferry, Beaver Co., Pa. — Also from Ferriferous 

 limestone at Smith's Ferry ; in Lawrence ; in Mercer ; in North 

 Butler. Q,33, 62, 264; Q2, 47; Q3, 25; V, 147.— Doubtfully 

 in Sharpsville sandstone^ Mercer Co. Q3, 62. — Also in Decker'' s 

 creek shale under Mahoning sandstone, Morgantown. L, 37. — 

 Also in Barren measure Black fossiliferous limestone^ Fayette 

 Co. L, 36 — X/F. 



Orthoceras crotalum. Hall. 15th Annual Report, 1862, 

 Vf//c, _ ^^^_^fe«gfe..-d^Md^ 2. 



page 78, plate 8, fig. 1, ordinary form and condition ; 2, variety 



